/* =============================================
   BPD WATER – style.css
   Production-Ready Stylesheet
   ============================================= */

/* ---- CSS Custom Properties ---- */
:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #ccfbf1;
  --primary-xlight: #f0fdfa;
  --accent: #06b6d4;
  --accent-dark: #0891b2;

  --text-900: #0f172a;
  --text-800: #1e293b;
  --text-700: #334155;
  --text-600: #475569;
  --text-400: #94a3b8;
  --text-300: #cbd5e1;

  --bg-white: #ffffff;
  --bg-light: #f8fafc;
  --bg-slate: #f1f5f9;

  --border: #e2e8f0;
  --border-focus: #0d9488;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);

  --header-h: 76px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text-700);
  background: var(--bg-white);
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

ul {
  list-style: none;
}

/* ---- Utility ---- */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 5vw, 40px);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn:hover::before { opacity: 1; }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(13,148,136,0.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(13,148,136,0.45);
}
.btn-primary:active { transform: translateY(0); }

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.btn-white:hover {
  background: var(--primary-xlight);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.btn-glass {
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
  backdrop-filter: blur(10px);
}
.btn-glass:hover {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.8);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

.btn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ---- Header ---- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
  background: transparent;
}

.header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 24px;
}

/* Logo */
.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}
.logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 50%;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-brand {
  font-size: 1.375rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  transition: color var(--transition);
}
.logo-sub {
  font-size: 0.625rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.header.scrolled .logo-brand { color: var(--text-800); }
.header.scrolled .logo-sub { color: var(--text-600); }

/* Nav */
.nav {
  flex: 1;
  display: flex;
  justify-content: center;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  transition: all var(--transition);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-link:hover::after,
.nav-link.active::after { width: 20px; }

.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.15);
}
.header.scrolled .nav-link {
  color: var(--text-700);
}
.header.scrolled .nav-link:hover {
  color: var(--primary);
  background: var(--primary-xlight);
}
.header.scrolled .nav-link.active {
  color: var(--primary);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.hamburger:hover { background: rgba(255,255,255,0.15); }
.header.scrolled .hamburger:hover { background: var(--bg-slate); }

.hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition);
  transform-origin: center;
}
.header.scrolled .hamburger-line { background: var(--text-800); }

.hamburger.open .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .hamburger-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.5);
  z-index: 999;
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition);
}
.mobile-nav-overlay.visible {
  display: block;
  opacity: 1;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.05);
  animation: heroZoom 12s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1.05); }
  to   { transform: scale(1.12); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10,30,60,0.80) 0%,
    rgba(13,148,136,0.50) 60%,
    rgba(0,0,0,0.60) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: var(--header-h);
  max-width: 700px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
  animation: fadeSlideUp 0.8s ease both;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.35);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.hero-title {
  font-size: clamp(2.75rem, 6vw, 5rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  animation: fadeSlideUp 0.9s 0.1s ease both;
}

.hero-title-accent {
  background: linear-gradient(90deg, #5eead4, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.175rem);
  color: rgba(255,255,255,0.82);
  margin-bottom: 36px;
  animation: fadeSlideUp 1s 0.2s ease both;
  line-height: 1.6;
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  animation: fadeSlideUp 1s 0.3s ease both;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.scroll-dot {
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 12px;
  position: relative;
}
.scroll-dot::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  border-radius: 2px;
  background: rgba(255,255,255,0.8);
  animation: scrollBounce 2s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(10px); opacity: 0.3; }
}

/* ---- Sections ---- */
.section {
  padding-block: clamp(64px, 8vw, 112px);
}

.section-header {
  text-align: center;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.section-tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-800);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.highlight {
  color: var(--primary);
}

.section-divider {
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  margin: 0 auto 20px;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--text-600);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.7;
}

/* ---- About ---- */
.about-section {
  background: var(--bg-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.about-lead {
  font-size: 1.125rem;
  color: var(--text-800);
  font-weight: 500;
  line-height: 1.7;
  margin-bottom: 20px;
}

.about-body {
  font-size: 1rem;
  color: var(--text-600);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-stats {
  display: flex;
  gap: 32px;
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-600);
  font-weight: 500;
}

.about-certs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.cert-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--bg-light);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.cert-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.cert-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.cert-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-800);
  margin-bottom: 6px;
}

.cert-desc {
  font-size: 0.875rem;
  color: var(--text-600);
  line-height: 1.6;
}

/* ---- Products ---- */
.products-section {
  background: var(--bg-light);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  position: relative;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 28px 24px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.product-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.product-card:hover::before { transform: scaleX(1); }

.product-featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  background: linear-gradient(145deg, var(--primary-xlight), var(--bg-white));
}
.product-featured::before { transform: scaleX(1); }

.product-badge-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
  align-self: flex-start;
}

.product-badge-tag.popular {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  color: #fff;
}

.product-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--primary-xlight);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.product-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.product-name {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-800);
  margin-bottom: 10px;
}

.product-desc {
  font-size: 0.9375rem;
  color: var(--text-600);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 20px;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.product-price {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-400);
  font-style: italic;
}

.product-btn {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  transition: all var(--transition);
  white-space: nowrap;
}
.product-btn:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.product-cta-card {
  background: linear-gradient(145deg, var(--primary), var(--accent));
  border-color: transparent;
  color: #fff;
}
.product-cta-card .product-name,
.product-cta-card .product-desc { color: rgba(255,255,255,0.95); }
.product-cta-card .product-icon-wrap {
  background: rgba(255,255,255,0.2);
}
.product-cta-card .product-footer {
  border-top-color: rgba(255,255,255,0.2);
  justify-content: center;
}
.product-cta-card .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: none;
}
.product-cta-card .btn-primary:hover {
  background: var(--primary-xlight);
}
.product-cta-card::before { display: none; }
.product-cta-card:hover { transform: translateY(-6px); border-color: transparent; }

/* ---- Quality / Process ---- */
.quality-section {
  background: var(--bg-white);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
}

.process-step {
  position: relative;
  text-align: center;
  padding: 40px 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-light);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.process-step:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: var(--primary);
}

.step-number {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(13,148,136,0.4);
}

.step-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  display: block;
  animation: floatIcon 3s ease-in-out infinite;
}
.process-step:nth-child(2) .step-icon { animation-delay: 0.5s; }
.process-step:nth-child(3) .step-icon { animation-delay: 1s; }

@keyframes floatIcon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.step-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-800);
  margin-bottom: 12px;
}

.step-desc {
  font-size: 0.9375rem;
  color: var(--text-600);
  line-height: 1.75;
}

.step-connector {
  display: none;
}

/* ---- Why Choose ---- */
.why-section {
  background: var(--bg-light);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-card {
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-white);
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.why-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary-xlight), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.why-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: var(--primary);
}
.why-card:hover::after { opacity: 1; }

.why-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
  display: inline-block;
  transition: transform var(--transition);
}
.why-card:hover .why-icon { transform: scale(1.15) rotate(-5deg); }

.why-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-800);
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.why-desc {
  font-size: 0.9375rem;
  color: var(--text-600);
  line-height: 1.75;
  position: relative;
  z-index: 1;
}

/* ---- Contact ---- */
.contact-section {
  background: var(--bg-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-info-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--primary-xlight);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info-item h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.contact-info-item p,
.contact-info-item a {
  font-size: 0.9375rem;
  color: var(--text-700);
  line-height: 1.6;
}
.contact-info-item a:hover { color: var(--primary); }

/* Form */
.contact-form {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 48px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-700);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-white);
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-800);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2394a3b8' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13,148,136,0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-300);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-success {
  display: none;
  padding: 16px;
  border-radius: var(--radius-md);
  background: #dcfce7;
  border: 1px solid #86efac;
  color: #166534;
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: center;
}
.form-success.visible { display: block; }

/* ---- Footer ---- */
.footer {
  background: var(--text-900);
  color: rgba(255,255,255,0.75);
}

.footer-top {
  padding-block: clamp(48px, 6vw, 80px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-top-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: clamp(32px, 5vw, 56px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 50%;
}

.footer-brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand-desc {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.60);
}

.footer-socials {
  display: flex;
  gap: 10px;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  color: rgba(255,255,255,0.6);
}

.social-link svg {
  width: 16px;
  height: 16px;
}

.social-link:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
}

.footer-col-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-links a::before {
  content: '';
  width: 0;
  height: 1px;
  background: var(--primary);
  transition: width var(--transition);
  display: inline-block;
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-links a:hover::before { width: 12px; }

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.fc-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.footer-contact-list a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9375rem;
  transition: color var(--transition);
}
.footer-contact-list a:hover { color: var(--primary); }
.footer-contact-list span:not(.fc-icon) {
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.5;
}

/* Footer Bottom */
.footer-bottom {
  padding-block: 20px;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.45);
}

.footer-certifications {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-certifications span {
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255,255,255,0.45);
  padding: 4px 12px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-full);
}

/* ---- Back to Top ---- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(13,148,136,0.45);
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  z-index: 900;
}
.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(13,148,136,0.55);
}

/* ---- Animations ---- */
@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-certs { grid-template-columns: repeat(4, 1fr); }
  .footer-top-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: 1fr; gap: 32px; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  /* Mobile Header */
  .nav {
    position: fixed;
    top: 0; right: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-white);
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 100px;
    padding-inline: 24px;
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
  }
  .nav.open {
    transform: translateX(0);
  }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    width: 100%;
  }
  .nav-link {
    width: 100%;
    padding: 12px 16px;
    color: var(--text-700);
    border-radius: var(--radius-md);
    font-size: 1.0625rem;
  }
  .nav-link:hover {
    color: var(--primary);
    background: var(--primary-xlight);
  }
  .nav-link::after { display: none; }

  .hamburger { display: flex; }
  .header-actions .btn-primary { display: none; }

  .header.scrolled .hamburger-line { background: var(--text-800); }
  .header:not(.scrolled) .hamburger-line { background: #fff; }

  /* Sections */
  .about-certs { grid-template-columns: repeat(2, 1fr); }
  .footer-top-inner { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .about-stats { gap: 20px; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .products-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: flex-start; }
  .about-certs { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .about-stats { flex-direction: column; gap: 16px; }
  .hero-badges { gap: 8px; }
  .badge { font-size: 0.75rem; padding: 5px 12px; }

  .back-to-top { bottom: 20px; right: 20px; width: 44px; height: 44px; }
}

@media (max-width: 480px) {
  .header { --header-h: 64px; }
  .logo-img { width: 36px; height: 36px; }
  .logo-brand { font-size: 1.125rem; }
  .logo-sub { display: none; }
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }

/* ---- Selection ---- */
::selection {
  background: var(--primary-light);
  color: var(--primary-dark);
}

/* ---- Focus Visible ---- */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}